JPS63208496A - Two-step speed operation driving device for electric winder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is capable of hoisting and lowering an electric hoisting device such as an electric chain hoist or an electric hoist at two speeds, low speed and high speed. This invention relates to a two-speed operation control device.

[Prior art]

Conventionally, as an operating device for an electric hoisting device, the
As announced by Publication No. 1-152569,
A load hanging device is connected to the hanging end of the load lifting strip hanging from the electric hoisting device body via the switch box body, and a grip protruding laterally from the switch box body. 2. Description of the Related Art There is known an operating device having a structure in which a push button for a hoisting switch and a push button for a hoisting switch are provided.

[Problem that the invention seeks to solve]

However, in the case of the conventional operation control device for an electric hoisting device, the switch push button is provided on a grip that protrudes laterally from the switch box body, so the push button is operated by grasping the grip. When the load hanger is tilted, a vertical force is applied to the grip, which may cause the switch box body and the load hanger to tilt. It becomes difficult. In addition, in the case of the conventional operating device, the hoisting speed and the lowering speed cannot be changed, so at the start and end of lifting and lowering, the hoisting and hoisting and lowering speeds are set to low speeds in order to reduce the shock. In order to improve the efficiency of lifting and lowering, it is not possible to perform a speed switching operation in which the hoisting and lowering speeds of the 9 hoists during lifting and lowering are increased.

[Purpose and structure of the invention]

The purpose of this invention is to provide a two-speed operation control device for an electric hoisting device that can advantageously solve the above-mentioned problems. A load hanging tool 5 is connected to the hanging end of the hanging load lifting strip 2 hanging from the load lifting tube 1 via a support member 4 provided with a vertical holding tube. , a low-speed operation grip 7 and a high-speed operation grip 8 each held at a neutral position in the vertical direction by a neutral position holding spring 6 are fitted to be vertically spaced apart from each other so as to be vertically movable;
In the holding barrel, there are a low-speed hoisting switch 5-LU, which is operated by the upward movement of a striker 9 fixed to the low-speed operation grip 7, and a low-speed hoisting switch 5, which is operated by the downward movement of the striker 9. -LD, a high-speed hoisting switch 5-HU that is operated by the upward movement of the striker 1o fixed to the high-speed operation grip 8, and a high-speed hoisting switch 5-HD that is operated in reverse by the downward movement of the striker 10. There is provided a two-speed operation operating device for an electric hoisting device, characterized in that:

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

1 to 5 show a first embodiment of the present invention, in which an upper hook 11 for hanging is connected to the upper part of an electric hoisting device main body 1 consisting of an electric chain block main body, and The upper part of the cable support member 12 is connected with a bolt 1 to the hanging end of the load lifting strip 2 made of a load chain hanging from the load sheave of the hoisting device main body 1, and the cable support member 12 The upper end of the holding cylinder 5 is screwed onto a male threaded shaft 14 provided at the center of the lower part of the support member 4.
is configured.

A load hanging device 5 consisting of a hook is provided at the lower end of the holding barrel.
A cylindrical rubber grip 7 for low-speed operation, which is threadedly connected and has a number of anti-slip annular protrusions provided at intervals in the vertical direction on the lower part of the outer surface of the holding barrel, is raised and lowered. A cylindrical rubber grip 8 for high-speed operation is fitted freely and is provided with a large number of anti-slip annular protrusions 9 provided at intervals in the vertical direction on the upper part of the outer surface of the holding cylinder 3. are fitted to be able to move up and down, and furthermore, spring holding shafts 15 are fitted into the lower and upper parts of the holding barrel and fixed with screws 76, and neutral position holding springs 6 are fitted to the valley spring holding shafts 5, respectively. The arms of the neutral position holding spring 6 are engaged with the upper and lower parts of the spring bone protrusions 17 that are integrally provided on the inner surface of each grip 7.8, respectively, and the holding cylinder 5 A pair of vertically extending slits 18 are provided at the upper and lower parts of the grip, respectively, for allowing the six arms of the spring 6 to move up and down, and each grip 7.8 is independently held at a neutral position by each of the springs 6. be done.

A striker 9 is fixed to the inner surface of the grip 7 for low-speed operation with screws 19, and a striker 10 is fixed to the inner surface of the grip 8 for high-speed operation with screws 20,
Further, the holding tube 5 is provided with a guide slit 21 into which the striker 9 is fitted so as to be able to move up and down, and a guide slit 22 into which the striker 10 is fit into which the striker 10 can be moved up and down.

A low-speed hoisting switch 5-LU that is reversely operated by the upward movement of the striker 9 of the low-speed operation grip 7, a low-speed hoisting switch 5-LD that is reversely operated by the downward movement of the striker 9, and the high-speed hoisting switch 5-LD. The high-speed hoisting switch 5-HU, which is operated by the upward movement of the striker 10 of the delivery grip 8, and the high-speed hoisting switch 5-HD, which is operated by the downward movement of the striker 10, refer to the holding cylinder 3.
The switch holding member 23 is fixed to the holding barrel with screws 24 inside the valley switch 5-LU, 5.
-LD, 5-HU, and 5-HD are connected to the power supply control section of the electric hoisting device via an extensible spiral cable 25, and the suspended load lifting strip 2 is connected to the spiral portion of the cable 25.
is inserted. The character ``LOW SPEED'' is displayed on the grip 7 for low speed driving, and the character ``HIGH SPEED'' is displayed on the grip 8 for high speed driving.

When a DC motor is used as the motor in the electric hoist main body 1, the low speed hoisting switch 5-L is activated by moving up and down the low speed operation grip 7 having the striker 9.
Ut or low-speed hoisting switch 5-LD, or operate high-speed hoisting switch 5-HU or high-speed hoisting switch 5-HD by moving the high-speed operation grip 8 having a striker 10 up and down. By switching the resistance value of the power supply, the power supply voltage is converted, and the hoisting and hoisting speeds are converted. Furthermore, when using AC parent-child motors with different rotational speeds as electric motors in the electric hoisting device main body 1, as described above, the low-speed hoisting switch 5- The high-speed hoisting switch 5-HU is activated by operating the low-speed hoisting switch 5-LD or by moving the high-speed operation grip 8 having the striker 10 up and down.
Alternatively, by operating the high-speed hoisting switch 5-HD, the AC parent-child motor is operated in a switching manner to convert the hoisting and hoisting speeds.

In the case of an electric hoisting device equipped with a two-speed operating device configured as described above, high-speed operation is required during lifting and lowering of empty boxes, lifting and lowering of load lifting equipment 5 when no load is on, and during lifting and lowering. You can operate the vehicle, and when you start lifting the load,
At the end of lifting the g object.

It is possible to perform low-speed operation when seating the load to be lowered, and when lowering the suspended object to a predetermined position.
If the suspended load is deviated laterally, the load can be easily lowered to a predetermined position by lowering the load at low speed while pressing the grip 7 laterally.

FIG. 6 shows a second embodiment of the present invention, in which a recess 26 is provided in the upper part of the grip 7 for low-speed operation, and a downwardly directed recess 26 is provided in the lower part of the grip 8 for high-speed operation. Although the protrusions 27 are provided in series, the other configurations are the same as in the first embodiment.

In the case of the second embodiment, the upper part of the grip 7 for low-speed operation and the protrusion 27 of the grip 8 for high-speed operation overlap in the lateral direction, so that the entire length of the grip 7.8 can be shortened.

When carrying out this invention, the grip 7 for low-speed operation may be placed on the upper side, and the grip 8 for high-speed operation may be placed on the lower side. Further, as the luggage hanging tool 5, any hanging metal fitting may be used instead of the hook.

The wheels of a trolley equipped with a traveling drive device may be placed on the lower flange of a traveling rail installed on the ceiling, and the upper part of the electric hoist main body 1 may be connected to the lower part of the trolley frame. Further, the present invention can be implemented in a two-speed operating device for an electric hoist having a wire rope lifting drum.

〔Effect of the invention〕

According to this invention, by simply holding the low-speed operation grip 7 with one hand and moving it upward or downward from the neutral position, the low-speed hoisting switch 5- By operating the LU or low-speed lowering switch 5-LD, the electric hoisting device can be operated at low-speed hoisting or low-speed lowering, or simply by grasping the high-speed operation grip 8 with one hand and moving it from the neutral position. By moving upward or downward, the high-speed hoisting switch 5-HU or the high-speed hoisting switch 5- is activated by the striker 10 provided on the high-speed operation grip 8.
By operating the HD, you can perform high-speed hoisting operation or high-speed hoisting operation of the electric hoisting device. Therefore, with a simple operation, you can perform low-speed hoisting operation, low-speed lowering operation, or high-speed hoisting operation of the electric hoisting device. , high-speed lowering operation can be selected and performed, and independent low-speed operation grips 7 and high-speed operation grips 8 are provided, making it clear to distinguish between low-speed operation and high-speed operation. The risk of erroneous operation during low-speed and high-speed operation can be reduced, and since it is only necessary to move the grip 7 for low-speed operation and the grip 8 for high-speed operation in the vertical direction, no load is applied to the load hanging device 5. Even if the cargo hanger 5 is not in use, hoisting and lowering operations can be performed without tilting the load hanging device 5, and the shock can be reduced by lowering the lifting speed at the start and end of lifting and lowering transportation. In addition, effects such as being able to increase the lifting speed during the lifting and lowering transportation to improve the lifting and lowering transportation efficiency can be obtained.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional side view showing a two-speed operation operating device for an electric hoisting device, and Figure 2 is a front view thereof. , Fig. 4 is a cross-sectional plan view showing the striker and switch receiving section, Fig. 4 is a transverse plan view showing the grip neutral position holding section, and Fig. 5 is a front view of the electric hoisting device having a two-speed operating device. It is a diagram. FIG. 6 is a front view of an electric hoisting device having a two-speed operation operating device according to a second embodiment of the present invention. In the figure, 1 is the main body of the electric hoisting device, 2 is a strip for lifting and lowering suspended loads, the filter is a holding cylinder, 4 is a support member, 5 is a load hanging device, 6 is a spring for maintaining a neutral position, and 7 is for low speed operation Grip, 8 is a grip for high-speed operation, 9 and 10 are strikers, 11 is an upper hook for hanging, 12 is a cable support member, 15 is a spring holding shaft, 17 is a spring receiving projection, 21 and 22 are guide slits, 2 Ro is a switch holding member, 25 is a cable,
26 is a recess, 27 is a protrusion, 5-LU is a switch for low-speed hoisting, 5-LD is a switch for low-speed hoisting, 5-HU is a switch for high-speed hoisting, and 5-HD is a switch for high-speed hoisting. .

Claims (1)

[Claims] A strip 2 for lifting and lowering a suspended load hanging from the electric hoisting device main body 1
A support member 4 having a vertical holding tube 3 at its hanging end.
A load hanger 5 is connected to the holding tube 3 through the outer periphery of the holding tube 3, and a grip 7 for low-speed operation and a grip for high-speed operation 8, which are held at vertical neutral positions by neutral position holding springs 6, are attached to the upper and lower sides of the holding cylinder 3, respectively. A low-speed hoisting switch S-LU and its striker 9 are fitted in the holding cylinder 3 so as to be able to rise and fall at intervals in the direction, and are operated by upward movement of a striker 9 fixed to the low-speed operation grip 7. a low-speed lowering switch S-LD operated by the downward movement of;
A high-speed hoisting switch S-HU that is operated by the upward movement of a striker 10 fixed to the high-speed operation grip 8 and a high-speed hoisting switch S-HD that is operated by the downward movement of the striker 10 are provided. A two-speed operation control device for an electric hoisting device.